Paul a



May 27 1924-.

F. A. BANCEL VACUUM PAN UNIT Filed June 8. 1923 INV'I'ENTOR Patented May 27, "1924.

UNITED srrns ATET UFFIGE.

PAUL A. BANCEL, 015 NUTLEY, NEi/V Zl'l'filElSEY, ASEIGNOIH, TU INGrlERFiOLL-RAJFTD CUMI- PANY, OF JERSEY CITY, NEW JIEREEY, A CGIB-LPORATION U15 JERSEY.

VACUUM-PAN UNIT.

Application filed June 8,

To all whom it may concern:

Be it known that 1, PAUL A. Bancnn, a citizen oi the United States, and a resident of? Nutley, county oi? Essex, and State of New Jersey, have invented a certain Vacuurn-Pan Unit, of which the following is a specification, accompanied by drawings.

This invention relates to vacuum pan units, comprisinp a vacuum pan and a main condenser and evacuator, including an interooolcr, but relates more particularly to de vices for controlling the startinp; and subsequent operation of the vacuum pan.

The object of the invention is to enable a vacuum pan, especially for raw sugar syrup, but for other liquids also, to be evacuated quickly on starting, in order to bring the vacuum up as rapidly as possible to the desired degree. By means ot a relatively small connection to the intercooler or intercondenser of the unit. the starting: is quickly effected and the main condenser is relieved oi this additional comparatively heavy quantity of air.

The invention is shown in one oi its preferred forms in the accompanying drawings, in which the figure is a diagrammatic side elevation of a vacuum pan unit embodying the invention.

Referring to the drawings, a vacuum pan A of any suitable or usual construction is connected to a main condenser B. which in this instance is shown as a barometric condenser. An intereooler or intercondenser C is connected to the main condenser by the pipe D and primary augmenter jets E supplied with steam thronpgh the pipe F from a suitable source (not shown) compress air and gases from the main condenser and discharge into the intercooler at a low vacuum. The intercooler is supplied with water by the pipe G connected to the water supply pipe H of the main condenser. A vacuum pump J, or secondary jets J connected to the intercooler by the pipe K, forms the second stage of the evacuatingapparatus, as desired.

In accordance with this invention, the vaenum pan A is connected to the intercooler by the bypass pipe L having an auxiliary controlling valve 0 which may be manipulated by an operator from the floor P by 1923. Serial N0. 644,131.

means of the chain Q. A main controlling valve It in the main connection between. the vacuum pan and the main condenser may also be manipulated independently by the chain 55.

hen it is desired to empty the vacuum pan, both valves 0 and R are closed. On starting the unit, the main valve B remains closed at first, and the auxiliary controlling valve t) is first opened. connecting the vacuum pan directly with the intercooler C by means of the lay-pass L. The primary jets E of the evacuating: apparatus are not used at this stage, but the pan is evacuated quickly by the vacuum pump J alone, or by the secondary jets J it such are used, or by both secondary jets and the vacuum pump. Then the auxiliary controlling valve 0 is closed, and the primary jets E are started in operation and the main controlling valve R is opened and the apparatus is continued in operation as long as desired.

I claim:

l. A vacuum pan unit. comprising in combination, a vacuum pan, a main condenser, a main connection between the vacuum pan and main condenser. evacuating apparatus connected to the main condenser, including an intercooler. a bypass connection between the vacuum pan and the intercooler, and controlling devices in the said main connec tion and by-pass connection for permitting" the vacuum pan to be quickly evacuated di rectly through th intcrcooler by means of the by-pass on starting and then operatively connected to the main condenser through the said main connection while the by-pass is rendered inoperative.

2. A vacuum pan unit. comprising in combination, a vacuum pan, a main condenser, a main connection between the vacuum pan and main condenser. an intercooler connected to the main condenser, a bypass connection between the vacuum pan and the intercooler and independently controlled valves in the said connections from the vacuum pan to the main condenser and intercooler.

A vacuum pan unit comprisingin combination, a vacuum pan, a main condenser, a main connection between the vacuum pan and said condenser, a main controlling valve in said main connection, an intercooler connected to the main condenser, evacuating apparatus connected (10 the intercoolei', a by-pass connection between the vaeuum pan and the intercoolei', and an auxiliary controlling valve in said by-pass connection, whereby the vacuum pan may he quickly evacnated directly through the said byqmss connection and im'ei'cooler on starting, with the main valve closed. 10

In testimony whereof I have signed this specification.

PAUL A. BANCEL. 

